Tesla T61 Jalta

The first Czechoslovak transistor radio with short wave band. Seven transistors, the 2805B version has long wave, medium wave and short wave 18,8 - 50 m bands, the 2806B has medium wave, short wave 18,75 - 38,4 m and 37,5 - 62,5 m bands. The possibility of short wave reception was determined by transistor development. The first transistors had very bad high-frequency parameters and could barely work in the medium-wave band. This radio uses a new OC170 transistor that could amplify up to 50 MHz, selected pieces could run up to 100 MHz. The output power is 250 mW.